Jack operable and supported vise



May 31, 1949. F. w. COFFING JACK OPERABLE'AND SUPPORTED VISE 2Sheets-Sheet 1 Filed April 12, 1946 May 31, 1949. F. w. COFFING2,471,726

JACK OPERABLE AND SUPPORTED VISE Filed April 12, 1946 2 Sheets-Sheet 2Patented May 31 1 949 UNITED SZIT LY 5E5 ATE T inw 4 Hei vqa p n ,Peevila .1 1 a. Q01- ApplicationApr-il-IZ, 194 6,- Serial-No. 661,734

.1 mam-21 This invention relates toa .vise structure.

The chief object. of this ;.invention vis to provide a standardsupported hoist withviselforming means. which are associated withpartsof. the hoist. for vise support and. operation.

The chief feature of. the..presentinventionresides in utilizing l theflexible ,inextensible ,means (chain,.cable andthe like) of.a.hoist.as.the..vise power means.

Another. feature, ofthe invention resides inithe slotting of thej aw.membersatithe .clampingportions thereof for flexibleinextensibleemeansam commodation and .a slotclosureforsame if as andwhendesired.

.A further feature .of the. invention .resides in the semi-yielding typebearingiorthe aforesaid means whereby .properclamping. can be effecteddespite the step by. step adjustment of saidmeans.

Stilla further feature of .one embodiment of the invention resides ininterposing .be'tween separablestandard and hoist a portion of the viseforanchorage and support purposes.

The hoist herein employed isof the so-called free chain type, hencerapidjaw adjustment can be effected for opening-anddnitiallyclosing sameand the chain embodiment is movable step by step in effect.

Other objects and features of the invention will be more fully set forthhereinafter.

The full nature of the invention will be. understood from theaccompanying drawings and the following description "and claims In thedrawingsFig. 1 is aside elevational-view of a standard supportedhoistwith the invention operatively associated therewith and a piece of workincluded therein, the work being shown in section and parts of thestandardbein'g broken away to show the same in section and othenparts inelevation.

Fig. 2 is a front elevational viewof -the vise portions of theinvention.

Fig. 3 is a transverse sectional view taken on line 3-3 in-Fig. 1 and inthe di'rection of the arrows but omitting the hook of the hoist chain.

Fig. 4 is a central sectional view of a modified form of movable jaw andcushion structure.

Fig. 5 is a perspective view of the upper ends of channel type .jaWmembers equipped withslot closures, the members being spacedlapartorseparated to simultaneously expose theinside fajces thereof.

Fig. 6 is a side elevational iewof amodification, which is the preferredform of. the invention.

..Fig.. 7i isv a front yiew thereof.

In Figs. .1 to- 30f the drawings 1 there is. conventionaliy illustrateda standard supported, hoist of thje separabletype. ,In Fig. 1,, ltindicates a suitablabase or foot, H a tubular standar d, [2 a hoist bodyoscillatably supporting a handle structure it. Carried by the hoist body-12 is a n oscillatable means I l which, .when positioned sa a a a p rto 15 dimctednnwafil an t h ht. c nd tion h hois io el vational movementof. the chain; l 6.

;When; the member i5 is directed upwardly and to the left forregistration with the legend Free," the; hoist isiconditione d for freechainv movement in either direction providing there is no load on thechain.

When the arm portion i5 is directed oppositely iromthe position shownin; Fig.1, that is toward the Down legend, then the hoist is conditionedior load lowering chain movement lfiumping of theehandle" is .up anddOWl'RWith the member its in either the up ordownjposition will effectchain movement in accordancewith that determined by the position of thearm 1 5.

'Ihe chain Hi is associatedin ternally with a s rock carried by h s iisu e itedh t th hoisthody i2, and the chainpassesjrom the hoist body asat lfia. The operating end of the chain terminates in a connectormounting a swivel hook I 9.

-.Flhe hoist bodymaylhave a swivel hookgfl-for suspension of hoist. "Thehoist body terminates in a shoulder 21, and extending downwardlytherefrom is t he portion)22/havingthe aperture .23 thereinfthepurpose'of ithe'latter being to. facilitate. reeving when; desired. fI-Ioyvever, herein the .proj ection 2 2. seats 'in the r pper tab la ieet e-s a .r ne fihe sho lder zi bears upon. the upper endflii of thestandard. p w One form of this standard supported hoist is fullydisclosed in the copending.applicationfige m; 597,165, filed June. '2,194's, Jan'd. entitled Combination hoist, jack and wire stretcher."

For the purpose. of understanding the present invention itlneed only bel said that eXtBI'ISiIQIB means which'advance in thelolad el'ei atin-,tion is \utili'zedfor vise awmqv mene 1 thelextensible means isadvanced".inste" byjst manner it will. be "appreciated that of themovable jaw is corr'es.pon olingly .o M p by step character to theextent that. the. eatensible means similarly advances.

..Ref renc wil now I e-ha t R s r a Herein is illustrated a stationary jaw @5 and an appr a e. o the eo ser ate a at!- 3 The opposite face 21 isarranged to bear upon the hoist l2.

Approximately midway between the top and the bottom of the member 25there is provided a rearward extension 28, and suitably secured theretoas at 29 is a plate 38] with an aperture 3| therein. The size of thisaperture is that necessary to pass the projection 22.

The position of this aperture in the plate is determined by therelationship of the bearing face 21 to the tubular standard so that theaperture 3| does register with the tubularity of the socket thusprovided at the top of the standard I I.

It will be observed, that if the hoist is detached from the standard andthe jaw 25 be applied to the hoist with the plate 3Q interposed betweenthe hoist and the standard, that the projection 22 will lock thecomparatively stationary jaw 25 rigidly in position with respect to thestandard and the hoist.

The lower end of the member 25 is provided with a forward extension inthe form of spaced cars 32 apertured at 33 and a rearward extension 34apertured at 35. A U-shaped strap 36 is rigidly secured by member St toopposite sides of the bearing or spacing member 3 3 and the strap issecured to the ears 32 by the transverse member 39 in apertures 33. Suchdual anchorage of the strap prevents tilting thereof relative to the jawmember 25 and provides a socket indicated generally by the numeral itfor reception of the standard II.

Now when the vise is utilized, the hoist and movable jaw aredisassociated as aforesaid and the U-shaped strap 36 is presented to theupper end of the standard ll and telescoped thereon. All is then lowereduntil the projection 22 of the hoist body nests within the upper end ofthe tubular standard, the portions 3% and 26 serving as spacers toprovide rigid mounting for said stationary jaw member 25.

The movable jaw member is indicated by the numeral M and the same on itsface d2 confronting the serrated face 26 of the stationary jaw member isV-notched as at 43. The lower end of said member is apertured as at Mand receives the member 3Q, which is supported by the straddling ears32, and which serves as a pivot or fulcrum for the lever type jaw member4 l.

Extending forwardly from the lower end of the movable jaw member is theportion at which is provided with aperture 46 to which is detachablyengaged the hook l9 on chain 16.

The stationary jaw 25 is notched as at t? and the movable jaw or lever4| is notched at 48, and these notches are of such a depth that, whenthe vise is applied to the jack and standard, the notches register withthe intake opening or throat of the hoist body wherein is positioned thechain [6.

Now when the work W is applied to the vise, the chain being nested inthe two aligned notches or slots 41 and 48, said chain lies below thework and the clamp is effected between the upper portions of the two jawmembers 25 and 4!.

As previously set forth, the chain is advanced step by step.Consequently, there is herein provided means for insuring positiveclamping with a predetermined pressure when the final clamp position ofthe movable jaw is intermediate, as it were, in the step to stepinterval.

Such means is herein disclosed as comprising a U-shaped stiff springmember 49, or other type cushion, to the movable member 4i immediatelyadjacent the notch 48 therein. This provides enough give foraccommodation inherent in this spring to insure proper clamping pressurethrough the chain whenever the clamping position of the movable jawcorresponds to what might be termed an intermediate position of thechain with respect to its step by step position.

The movable jaw, shown in Figs. 1 and 2 more particularly, is a lever ofthe first class and is of bell crank type.

In Fig. 4 a modified form of the invention is illustrated. Herein Mlindicates the movable jaw slotted as at 2&8 and notched as at 243. Thechain 2H6 herein is enveloped near hook 2l9 by a coil spring res bearingat one end upon the end 2 lila of hook mount or connector 2 i8.

Herein the jaw is recessed at for a sufiicient distance from the rearface to accommodate a portion of connector as well as spring 2%, thelatter at its other end bearing on bottom portions 2b? of the recess asshown. The diameter of said recess is sunicient to take the spring andthe immediately adjacent end of connector 218.

The resistance of this spring is such that for normal clamping operationit may yieid but little. However, whenever desired or required it willcompress permitting end Zlda to further advance in said recess towardface iii? when the step interval requirements necessitate such advance.

The jaw closing force usually is appiied to. the jaw 2 5i through thebottom portions of recess except when the enlarged portion connector 2E3engages the outer face of jaw member hi5.

Reference will now be had to another embodiment of the invention whichis illustrated in Fig. 5, wherein both jaw members and the are shown aschannel sections. These are slotted at 3 38 and 3d? respectively. Angiecaps or heads 34m and 3125a are pivoted on the jaw members at Edit and32th and when the caps are seated the same bridge the slots 348 and 3%?respectively.

The confronting faces of the caps may be knurled, as illustrated, orotherwise formed. Note that the pivots 341D and 32th are oppositelydisposed, as it were, one on one side of the jaw and the other on theOpposite side of the opposite jaw. The purpose thereof is to prevent capcreeping or tilting upwardly when and while clamping pressure is beingapplied.

In Figs. 6 and '7 the preferred form of the invention is illustrated andnumerals of the one hundred series designate parts like or similar tothose shown in Figs. 1 to 3 and designated by corresponding numerals ofthe primary series.

The standard III has open upper end I23 receiving projection I22 onhoist body H2 which body includes bosses Eli-a at opposite sides seatingopposite ends of sprocket or drum shaft Iii if of chain or cable typerespectively.

Stationary jaw I25 is of channel type and is notched and capped as at12%. at the upper end in substantially the same manner as illustrated inFig. 5. Jaw E25 herein includes opposite hook portions I250 which hookover bosses Mia.

This jaw has longitudinally-spaced lower-end mounted curved arms a andi332) which are oppositely disposed and spaced sufficiently to pass thestandard I i i when angularly presented thereto. Thus after suchpresentation, the jaw is aligned with the hoist and standard and loweredto associate the bosses and the hooks. This constitutes the viceanchorage or general support.

The movable jaw member MI is of channel form and has its upper endslotted and capped as at Mla in a manner similar to that illustrated inFig. 5. Nested in the movable jaw and secured thereto as at l-ll is thelongitudinally and upwardly directed Spring Hill, same bearing on ful-'crum IEla.

Projecting forwardly from the lower end of jaw member I25 are the earsIS'l, same straddling the lower end of the movable jaw member iii andpivotally supporting same on pivot pin liiii.

Spaced ears M5 carried by the lower end oi the movable jaw member t llare offset inwardly towards each other as at l lila and mount pin Hit,same being engageable by hook ilii carried by chain H6 which bears uponthe upper end of spring I49 and passes through the slots or notchesNil-4 48 in the upper ends of the jaw members.

Operation of this form of the invention is substantially that previouslydescribed relative to the embodiment illustrated in Figs. 1 to 3. Thepreferred form is illustrated as of separable hoist and standard typebut obviously separation herein is an incidental feature for both may berigidly connected together.

In Fig. 6 only there is illustrated a pair of shearing or cuttingmembers it! and it? secured as at 63 and lt i to members i225 and. MErespectively for bolt, etc, cutting or shearing purposes. B indicatessuch abolt.

While the invention has been illustrated and described in great detailin the drawings and foregoing description, the same is to be consideredas illustrative and not restrictive in character.

The several modifications described herein as well as others which willreadily suggest themselves to persons skilled in this art, all areconsidered to be within the broad scope of the invention, referencebeing had to the appended claims.

The invention claimed is:

1. In combination with a hoist structure including a body portion, aninextensible flexible means such as a cable, chain and the like, powertransmitting mechanism incorporated in the body portion for moving theflexible means therethrough, and a tubular standard detachablysupporting the body portion; a detachable vise structure comprising astationary supporting member for a vise jaw, a movable supporting memberfor a vise jaw, means mounting said movable member on said stationarymember, means for connecting the flexible means to the movable member,the flexible means extending from said connecting means and passingthrough both members and into the body portion, and vertically spacedmeans rigidly and detachably connecting the stationary member to thebody portion and standard.

2. Structure as defined by claim 1 wherein said movable member mountingmeans comprises a pivotal connection between lower ends of the members,and the members being positioned alongside and generally parallel to thestandard.

3. Structure as defined by claim 2, said vertically spaced means havingits lower means juxtapositioned to said lower ends for detachablysecuring the same to the standard in spaced relation, and having itsupper means engaging said body portion.

4. Structure as defined by claim 1 wherein a yielding means isoperatively interposed between the movable member and the flexibleinextensible means.

5. Structure as defined by claim 1 wherein said vertically spacedconnecting means includes an apertured plate, and wherein the standardis provided with a socket at its upper end and the body portion isprovided with a projection seating in said socket, said plate beinginterposed between the standard and body portion, so that saidprojection passes through the plate aperture.

6. Structure as defined by claim 1 wherein upper portions of the membershave elongate and medially located notches for seating the flexiblemeans.

'3. Structure as defined by claim 6, and spring means mounted on saidmovable member adjacent its notch, said spring means being engageable bysaid flexible means.

8. Structure as defined by claim 1 wherein said movable member mountingmeans comprises a pivotal connection between lower ends of the members,the members being positioned alongside and generally parallel to thestandard, each member being channel-shape in transverse section andhaving a cap member pivotally mounted on an upper end thereof.

9. Structure as defined by claim 1 wherein an upper portion of eachmember is provided with an open-end and medially located notch foraccommodating said flexible means, and a cap mounted on each upperportion for closing the entrance to each notch, said cap means alsoproviding confronting clamping faces.

10. Structure as defined by claim 9 wherein each member is madechannel-shape in transverse section, and each cap comprises atransversely disposed angle member pivotally mounted on its supportingchannel.

11. Structure as defined by claim 1 wherein said movable member mountingmeans comprises a pivotal connection between lower ends of said members,said members being positioned alongside and generally parallel to thestandard, each member being channel-shape in transverse section andhaving a cap pivotally mounted at one end on an upper end of the member,each cap being L-shaped in transverse section, the two pivotal axes ofthe caps being oppositely disposed relative to a longitudinal centerlineof each channel-shape member.

12. Structure as defined by claim 1 wherein the means connecting theflexible means and movable member includes an enlargement at the memberengaging end of said flexible means, and a coil spring surrounding theflexible means and positioned between the movable member and saidenlargement to serve as a yielding bearing.

13. Structure as defined by claim 12 wherein the movable member isprovided with a recess to house and seat the coil spring.

14. Structure as defined by claim 13 wherein upper ends of the movableand stationary members are each provided with a medially located notch,the notch in the movable member communicating with said recess.

15. Structure as defined by claim 1 wherein the members are madechannel-shape in transverse section, an upper portion of each memberbeing provided with an open-end and medially located notch foraccommodating said flexible means, an L-shape cap being provided foreach upper portion and closing the entrance to each notch, said capsproviding confronting clamping faces and being pivotally mounted at oneend on the members, the two pivots being disposed on opposite sides ofthe aligned notches.

FREDRICK W. COFFING.

(References on following page) 7 REFERENCES CITED figf The followingreferences are of record in the 594314, file of this patent: 1,253,725UNITED STATES PATENTS 5 2377524 Number Name Date 286,995 Boyce Oct. 23,188 Number 367,658 Oliver Aug. 2, 1887 313,018 377,976 Babcock Feb. 14,1888 10 650,743

Name Date Babcock Aug. 12, 1890 Babb Nov. 23, 1897 Rahfeldt Jan. 15,1918 Coffin June 5, 1945 FOREIGN PATENTS Country Date Germany June 24,1919 France Sept. 25, 1928

